I watched the "Bearded Math Man's" latest video about breaking numbers into factors and perfect squares  and commented that I could share it better if the license were changed from "Standard YouTube" to "CC-BY."   He changed it :)     

   His math's a little more advanced than most of what I help students with but I like his attitude and explanations.   (I'm sure we wouldn't agree on everything!)   It's another example though of somebody being more than willing to make their work "legally sharable" :)